Applicator for heated fluids

ABSTRACT

An applicator for applying heated or foamed fluids including an applicator body having a retaining ring provided with a valve for controlling fluid flow. A substance for chemical reaction with the fluid being dispensed to heat or foam the fluid is disposed outwardly of the valve.

United States Patent Gilbert Schw 20 Wilmot Circle, NY. 10583 783,194

Dec. 12, 1968 Aug. 24, I971 Inventor Appl. No. Filed Patented APPLICATORFOR HEATED FLUIDS 4 Claims, 5 Drawing Figs.

U.S. Cl. 222/146 ill, 222/518, 401/206 Int. CL 367d 5/62 Field ofSearch222/146 H,

146 HA, 190, 146 R, 518; 401/206 [56] References Cited UNITED STATESPATENTS 3,203,026 8/1965 Schwartzman 401/206 3,240,396 3/1966Friedenberg 222/146 HA 3,308,993 3/1967 Bruno 222/146 HA 3,399,8109/1968 Bume 222/l46 HA Primary Examiner-Robert B. Reeves AssistantExaminer-Frederick R. Handren Attorney-Kenneth S. Goldfarb ABSTRACT: Anapplicator for applying heated or foamed fluids including an applicatorbody having a retaining ring provided with a valve for controlling fluidflow. A substance for chemical reaction with the fluid being dispensedto heat or foam the fluid is disposed outwardly of the valve.

FIG. 2

APPLICATOR FOR HEATED FLUIDS This invention relates to a fluidapplicator especially adapted for applying medications or cosmetics andincludes improvements over the invention disclosed in the U. S. Pat. No.3,203,926, to Gilbert Schwartzman, issued Aug. 31, 1965 for FluidApplicator.

An object of this invention resides in the provision of means forfacilitating the application of medications, cosmetics, and other heatedfluids or foamy solutions through suitable chemical reactions within theapplicator. The concept of this invention resides in the positioning ofa substance capable of chemical reaction with the fluid within thecontainer of the applicator so that the fluid dispensed by theapplicator is heated or foamed or otherwise rendered more satisfactoryby way of the chemical reaction.

A first embodiment of the invention conceives the use of a washersuitably held in place within a groove in the retaining ring of theapplicator and at least partially covered by material integral with theretaining ring of the applicator so that the rate of chemical reactionis controlled and so that fluid which passes by the valve of theapplicator can react with the material of the washer and cause anexothermic or foaming reaction or the like solely in the space betweenthe retaining ring and the cover and outwardly of the cover for optimumeffect of the medication, cosmetic or other fluid being dispensed.

Another embodiment of the invention resides in the concept of disposinga porous compressible body of material having at least partiallyembedded therein suitable crystals, granules, or like material of asubstance capable-of chemical reaction with the fluid within thecontainer so that an exothermic or foaming reaction is obtained withinthe compressible body and outwardly of the cover for optimum applicationof the fluid.

Still further objects and features of this invention reside in theprovision of a fluid applicator having means associated with theapplicator and shielded when the applicator is in a valve-closedposition from contact with the fluid within the container of theapplicator so that the majority of the fluid remains free of thesubstance with which it will chemically react until such time asitpasses through a valve opening, yet which is simple in construction,capable of being manufactured in any convenient size and easy to use.

These, together with the various ancillary objects and features of thisinvention which will becomes apparent as the following descriptionproceeds are attained by this applicator for heated or foamy fluids,preferred embodiments of which are illustrated in the accompanyingdrawing, by way of example only, wherein:

FIG. 1 is a vertical sectional detail view of an assembled fluidapplicator constructed in accordance with the concepts of the presentinvention;

FlG. 2 is a view similar to FIG. 1, but showing the applicator in anoverturned position in use;

FIG. 3 is a horizontal sectional view of the applicator with the coverremoved and taken along the plane of line 3-3 in H0. 1;

FIG. 4 is a vertical sectional view of a modified embodiment of theinvention; and,

FIG. 5 is an enlarged sectional detail view of the applicator takenalong the plane ofline 5-5 in FIG. 4.

With continuing reference to the accompanying drawing, wherein likereference numerals designate similar parts throughout the various views,reference numeral 10 generally designates the fluid applicatorcomprising the present invention. This applicator includes a container12 in which a retaining ring 14 is positioned.

The retaining ring is designed to fit in the neck of the container l2and includes a flange 16 provided with a swaged lip 18 for retaining acover disc 20 in position between the lip 18 and rib 22 of circularconfiguration.

The disc 20 is constructed of two layers, the upper layer 21 of which isformed of a nylon knitted brushed fabric so as to achieve a feltlikeapplicator surface and appearance, while having the chemical inertnessand strength of the nylon. Laminated and bonded to the nylon knittedbrushed fabric is the lower layer 23 of coarse polyurethane foam.

The retaining ring 14 is provided with a web 26 which has a circulartapered opening 28 therein which is of approximately one-half thediameter of the web 26. Cooperating with the arcuate tapered opening 28,which serves as a valve seat, is the conical surface 30 of an integrallymolded valve assembly generally indicated at 24. The valve assembly 24includes a spring 32 formed in helical coils, the lower portion beingintegrally formed with a mounting ring 34. The mounting ring is held inplace by the swaged end 42 of the retaining ring 14. The swaged end 42thus retains the valve assembly 24 within the retaining ring 14 with thespring 32 in a continuously stressed condition under compression so thatthe valve head 36 is continuously urged into and through the opening 28for the purpose of closing the opening and preventing fluid flow fromthe container 12 into the space between the web 26 of the retaining ring14 and the cover 20. The upper end of the spring 32 is integrally formedwith the body portion 33 of the valve assembly.

-A groove 70 is formed in the web of the retaining ring and disposed inthe groove is a washer 72 of a chemical material capable of reactingwith the fluid 74 within the container 12. The washer 72 may comprisecompressed crystals of magnesium chloride capable of an exothermic orthermogenic reac tion with an aqueous solution 72 as it passes outwardlyof the container.

Of course, the well-known selected combination of a sulftte and aperoxide can be readily employed as the two reactants for exothermic andfoaming reactions.

In order to control the speed of reaction, a lip of selected size andconfiguration is swaged over the groove 70. The lip may include ascreen, fingers, extensions, etc. and may extend as much as percent ofthe groove 70.

In the embodiment shown in FIG. 4, there is disposed between the valvehead 36 and the cover 20 a cylindrical body 50 of coarse polyurethanefoam, which is continuously compressed and serves to bulge the cover 20in a convex manner. lntegrally molded with and embedded in the body 50are crystals or granules of material 76 capable of reacting with thefluid in the container. The material 76 may be granules of a thermogenicmaterial such as magnesium chloride.

A latitude of modification, substitution and change is intended in theforegoing disclosure, and in some instances, some features of theinvention will be employed without a corresponding use of otherfeatures. Accordingly, it is appropriate that the appended claims beconstrued broadly and in a manner consistent with the spirit and scopeof the invention herein.

1 claim:

1. An applicator comprising a container having a neck, fluid in saidcontainer, a retaining ring having a projecting portion seated in saidneck, a cover secured to aid ring, said ring having an opening thereinforming a valve seat, a valve assembly including a valve head engageablewith said valve seat to close said opening and being movable withrespect to said valve seat to control fluid flow through said opening,spring means integral with said valve head and biasing said valve headand said projecting portion for normally urging said valve head againstsaid valve seat, said valve head being depressible on depression of saidcover to permit l'luid flow through said opening. said retaining ringhaving a circular groove 70 therein concentric with said opening, awasher of a substance capable of chemical reaction with said fluiddisposed in said groove, and means 80 integral with said retaining ringfor locking said washer in said groove.

2. An applicator according to claim 1, wherein said fluid is an aqueoussolution, said washer being ofa substance capable of exothermic reactionwith said fluid.

is capable of forming a foamy solution in reaction with said fluid.

1. An applicator comprising a container having a neck, fluid in saidcontainer, a retaining ring having a projecting portion seated in saidneck, a cover secured to aid ring, said ring having an opening thereinforming a valve seat, a valve assembly including a valve head engageablewith said valve seat to close said opening and being movable withrespect to said valve seat to control fluid flow through said opening,spring means integral with said valve head and biasing said valve headand said projecting portion for normally urging said valve head againstsaid valve seat, said valve head being depressible on depression of saidcover to permit fluid flow through said opening, said retaining ringhaving a circular groove 70 therein concentric with said opening, awasher of a substance capable of chemical reaction with said fluiddisposed in said groove, and means 80 integral with said retaining ringfor locking said washer in said groove.
 2. An applicator according toclaim 1, wherein said fluid is an aqueous solution, said washer being ofa substance capable of exothermic reaction with said fluid.
 3. Anapplicator according to claim 1, wherein said washer is formed ofmagnesium chloride.
 4. An applicator according to claim 1, wherein saidwasher is capable of forming a foamy solution in reaction with saidfluid.